Molding machine



Aug. 24, 1926. 1,597,322

F. E. MCCABE MO'LDING MACHINE Filed June 30, 1924 3 Sheets-Sheet wmy MQWf Emmmmm a H IIUND us- "24, 1926. I

F. Ef. MccA'BE 'HOLDING MACHINE Filed Jue so, 1924 3 Shets-Sheet 2 4Aug. 24 1926.

A1,597,322 F. E. MCCABE MOLDI NG MACHINE Filed June 30, 1924 3Sheets-Sheet 3 .17a fz Jz fit lill ff 60 i| [frye/#0f Patented ug. 24,1926.

Unirse STATI-:s

Pattini OFFICE,

FRANK E. MCCABE, OF CHAGRIN FALLS,` OHIO, ASSIGNOR TO THE GRABLER MANU#FACTURING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MOLDING MACHINE.

` Application led .Tune 3Q, 1924. `Serial No. 723,197.

and between which heads a pattern, that is carried by the ramming head,and a superposed sand-filled flask are adapted to be compressed, myimproved means serving,` as the ramming head returns to normal posi-`tion, to arrest the movement of the flask thereby to cause the patternto be withdrawn from the mold, and thereafter to sustain the flask untilthe flask ismanually or otherwise removed. t

The primary obJect of my invention is to provide, in a machineoftheaforesaid char` acter, means for larresting the movement of theflask during the return movement of the ramming head so that the patternwill be withdrawn from the mold and for sustain` ing the flask in such aposition that it may be' readily removed from the machine, the saidmeans automatically withdrawing from flask arresting position when theflask is removed so that another llask may be ap-l plied to the pattern,and likewise resuming flask arresting position during the subsequentramming operation. i

tively simple and inexpensive means of the aforesaid nature which isthoroughly reliable, is not likely to get out of order, is con` venientof embodiment in a molding machine of the character above referred `toand is supported by a stationary part of the nia-,t

chine, thus relieving the moving parts 0f undue weight. Y

rThe foregoingobjects, with others which will hereinafter appear, areattained in the structure defined by the claims annexed hereto anddescribedin detail in the following specification, reference being hadto the accompanying` drawings wherein Fig. `1 is a sectional frontelevation of av molding machine incorporating my improvedflaskiarresting and sustaining means; Fig. 2 isa fragmentary rearelevation ofthe machine;

Fig. 3 is a sectional plan on the line 3-3 of Fig. l; and Fig. 4 is atransverse section on the line l-et of Fig. 1.

The molding machine wherein I have shown my invention incorporatedcomprises, generally, a base 1 involving an upwardly opening cylinder 2containing a piston 3 on which is mounted a ramming head a, said headbeing secured by suitable means to the `top flange 6 of the piston. Thepiston is heldV against turning with respect to the base by plungers 8that are secured at their upper ends tothe flange 6 and operate withindash pots 9 that are sustained by the base,

the dash pots serving to control the descent of the ramming head andparts carried thereby.`

Secured to the ends of base l are columns 10 and 11 the formerterminating at its upper end in a cylindrical post 12 on which isjournaled a sleeve13 of a swinging pressure head 15, a nut 16 beingapplied to the threaded upper end of the post 12. The free end oftheswinging head is formed with a yoke 1S which is arranged to straddle thecylindrical upper end 19 of the column 1l,

a suitable abutment 20 being applied to the top of the column" 11 andheld in place by a nut 21 thereby to resist upward movement of the head.

Suitably "attached to theramming head l and the swinging head 15 are therespective i pattern frames 25 and 26 which carry pat- Further objectsare to provide compara-y terns 25Et and 26a.

A mold flask 28 is` adapted to be placed upon thepattern frame 25 and toinsure the flask being properly positioned with respect to the pattern25a. the flask and pattern frame are provided with cooperating positioning parts. In the present embodiment these parts consist of guidepins 30 which rise from the ends of the pattern frame 25 and enterapertures in ears 31 which extend f fllfeurnaled within suitable,`bracelets and compressing operations.V As will presently appear from thedescription or' the machines operation, the sand frame is projected'over the top pattern frame, and is adapted to 'be sustained in thisposition during the descent 'of the flask by holding mea-ns A35. L

To insure the 'proper :alignmento the molding equipment carried by therespective heads 4C Vand 15, the former or animing head 4 is providedwith pilot pins 40, and the latter or swinginghead '15 with 'guides 41which contain sockets into which the pilotpins alc'ctirately lit. y

-Pressure flu-id 'is supplied from a pipe lline lle, through a three-wayvalve and Vpipe lldf'to athe "cylinder `2 for .elex'fating 'thepiston'and the 'ral'mning' head fl, withfthe 'carried thereby. VIn oneposition the vfalve siipplies "pressure fluid to Ythe Y'c'ylinder whilein VAa-,jse'cn'd 'position it permits 'the titi-id Vfrom the 'cylinderto "escape through a @pipe y fnv thfatare fl'e d" with ,respect to thebase "V1 and Y aiieSliwn as'caririe'd bythe'eolunins 10 cro 'pairslswing'inwardly andoutwar iv 11, are short shafts 52 whichcarry armstliat-constlttit'e Y my Aimproved :flask "arresting,` andsustainingmeanslt, Vwill be 'observ d from rigs. je and that there new@ sii-afa 52,with *their 'resp'ective arms, Yarranged --adjacent e-ac'hend'or'themachine andthe uppe'rfends oithe'opposed pairs of ary-rms are adapted-to" swing' inwardly beneathV the flask 28. The armsje'i-ea'eh pairarefasten-ed rig'- togethertlirough a yoke '56 sothat said arms'aecaused Ito movecasy one; andthe tivopair's .of arms, which are locatedadjaeent'the oppositeends 'et theila'slr, are operatively,connectedtegether,` s thatltheI two i' i Y l" at thesame'tinie,.by`means of a. link 5`8that is located onthe're'ar side or'the ymachine and has one of its ends connectedtoo-ne oi the arms 53above itsshallt 52 while its! other 'Vend is connected to an arm'()which de-Y pends from the rear shai't52 of lthe otherpair of'ai'fzms thelatter gpair being;` 'located onthat'end of thev machine :toward .thecolumn'lO. Incidentally, `shoes G1 of hardened metall maybefsecured,4asfby `screws 62, to Ythe tlaslr engaging ends'of -the arms Pvotallymounted upon `a stud `which extends rearwardly from the column 410 is alever 66 .that has a laterally-extended arm A67 along,- which aweight'GS is adaptedto be adjusted and secu-red "in anyo."positionthereonby a setsciew 69. The weight tends to swingt-he lever 66 in "aAdirectionto ad- Vance its -lower endftoward the vpreviously mentionedarintO, but-this is resisted by an abutment 70 in the nature of a pinthat tends rearwardly fronr the lower end of the sleeve lfofthe-swinging head 15. v

Arod 7 5 has'its inner end pvtally connected to the lower extremity ofthe arm and its outer end plays freely through a hole in the lower endof the lever 66. The rod 75 tis threaded inwardlyl'a "suitable distancefrom its outer end Vand has a nut 76 applied thereto between which and acollar 77 is *com'ined a-coi1l spring 78 which sur; rounds 'the-rod,-the collar being ar-ranged to engage the adjacent side of the lever 66.Spaeed lrom the opposite side of the lever is a nut 79 that is threadedto the rod. The rod is slidab'lethrough a guide 80 that extendsrearwardly from an adjacent portion oi the machine, and fan adjustable`stop lfor the redis .provided by lock nuts'l wh engage 'the V`g'gtlideV8O to limit 'the eut'wa'rd movement or the lrod. stop will 4pi'fesently`appear. Y i

`Suitable latch mechanism, designated 85, serves to vhold v'thereeend'eff the 'swinging head 1'5 "to the upper I'end of the column 11.

'jln considering the operation' of vvthe mechanism, lit willbe 'assumedthatthe ypressure head has been Ireleased trein the column 11 andlswurigrearwardly out'o'f theway Th'eoperat-or after vcleaning the`pattern 25a byfmeans 'of compressed fair in accordance the patternlframe with the perforated ears l31'ofthe'flaskenga-ged over the gai-depi'rrsflSO. IHe"then-app'lies the sand'frame 32 to ithef'upp'ei end ofthe flask andfi'lls the flask vand sand iramelwith sand, scraping thesurplus. sanc'l fr omthetop ofi the sand 'frame so that :the Asand is1y-iush with the stop edge offthe'franie.

n may be explained at this lpent @am when thepressure head 15 isswung toinoperative position, the 'abutment 70 moves awal AVfrom'normal-.position and allows "the web'litBS to swing* he lever 6G inladirectionto eiigage its lower end withthe nut 79 on the rod 75 therebylto'thrustsaid fred inwardly 'an d :swing the llo'wer'end oil: the iarlln 60, "to`whic`h Vsaid -Vrod -isj connected, in la cer` responding direction. Asa resultf ith-is, andby reasonottheconnections above de` scri'bedindetail, 't'h'e upper lends 'of the llasli sustaining' arms 53 aTrethrown outwardly bevond {iaslr engaging position.

Returning' new to "the operation of Athe The ypurpose of this machine,after the operator has fll'led the tion in which the supply pipe 44 isthrown into communication with the pipe 46 and pressure fluid isaccordingly conducted to the cylinder 2 to elevate the piston 3 part-scarried thereby. As the ramming head 4 rises, the pilot pins 40 enterthe sockets of the guides 4l and properly align the cooperating moldparts that are carried by the heads, and as the ramming head completesits upward stroke the sand frame 32 is projected upwardly over thepattern frame 26 and is caught by the holding means 35, the sand beingcompacted until it now occupies only the flask, with mold cavitiesdepressed in its upper and lower surfaces. As the ramming head ascendedand the flask 28 withdrew from between the opposed pairs of arms 53,said arms were swung inwardly by the spring 7S to flask engagingposition. It will be clear from an inspection of Fig. 2 that the armsare stopped in flask engaging position by the engagement of the nuts 8lwith the guide 80.

The operator next throws the valve 45 to the position wherein thecylinder 2 is eX-` hausted through the pipes 46 and 47, and the pistonV3 with the parts carried thereby descends, the descent being cont-rolledby the dash pots 9. In the descent of the parts, the flask is depositedupon the upper ends of the arms 53 while the ramming head with thepattern 25a carried thereby settles to normal position thus withdrawingthe pattern from the mold. The flask, free of all connections save as itrests by its own weight upon the arms 53, may be easily lifted from themachine.

In the starting of another operation, the pressure head is unlatchedfrom the column ill and swung rearwardly, and as this is done the arms53 are automatically retracted from flask engaging' position through theabove described mechanism. Vhen another flask is placed upon the patterna, the operator removes the sand frameV from the holding means 35 andapplies it to the flask and continues as before.

From the foregoing it will be seen that my invention provides verysimple yet thor oughly reliable means for arresting and sustaining theflask after the molding operation and which is automatically moved outof the way before another flask is placed in the machine. Furthermore,this means is supported solely by a stationary part of the machine andthe moving parts may thus be made lighter than in the case of machineswherein the stripping mechanism is carried by the ramming head.

Having thus desc 'ibed my invention, what I claim is l. In a moldingmachine, the combination of a base, a ramming head supported thereby forvertical movement, a pressure head movable from an operative positionover the and the i ramming head to a second position laterally of the:former position, a pattern carried by the ramming head, aflask adaptedto be applied to the pattern, opposed flask sustaining arms pivoted tothe base, means tending to swing said arms inwardly into the path ofvthe flask, and operative connections through which said arms are swungoutwardly by the pressure head when the latter is swung to the aforesaidsecond position,

2. In a. molding machine, the combination of a base, a ramming headsupported thereby for vertical movement, a pressure head movable from anoperative position over the ramming head to a second position laterallyof the former position, a pattern carried by the ramming head, a flaskadapted to be applied to the pattern, opposed flask sustaining armspivoted. to the base and adapted to swing into and out of the path ofthe flask, member tending to shift said arms out of the path of movementof the flask, and yielding connections between said meme ber and thearms, the pressure head and aforesaid member having parts cooperating tomove said member to a position in which the flasksustaining arms aremoved toward the path of movement of the flask when the pressure head isin operative position.

3. In a molding machine, the combination of abase incorporating acylinder having its axis arranged vertically, a piston operating withinsaid cylinder, a ramming head sustained by the piston, a pattern carriedby the ramming head, a flask adapted to be applied to the pattern,columns rising from the opposite ends of the base, a pressure head journaled upon the upper end of one of said columns for swinging movementin a substantially horizontal plane, the free end of said head beingdesigned for holding engagement with the upper end of the other column,opposed flask sustaining arms pivotally supported on axes fixed withrespect to the base, connections between said arms whereby their upperends are caused to swing inwardly and outwardly together, a leverpivotally supported by one of the aforesaid columns, a rod havingoperative connections with the aforesaid arms and yielding connectionwith the lower end of said lever, means tending to rock said lever and,through the intervention of the aforesaid rod, move said arms in adirection to withdraw their upper ends from flask engaging position, thepressure head and said lever cooperating' to swing the lever' inopposition to said means when said pressure `head occupies operativeposition.

4. In a molding machine, the combination of two heads that arerelatively movable toward and from each other along a given axis, one ofthe heads being shiftable to a position laterally of said axis, apattern carried by one of the heads, a flask adapted to lll] be appliedto thehpat-tern, flask 'arresting and lsustaining means movable:transversely of the path o movement of theflaskfmechaliism acting-toproject said' means yinto the path of the yHash so es to receive theflask as the heads recede along said given axis, and fur-ther mechanismacting to WithdrawV v emily of seid exis.

said means fro-mirth@ path o fthe ask when' the laterally sh'itable headis moved lat-Y ln testimony whereof, l hereunto aix .my signature. v

.FRANK JE. MCGABE.

